This paper provides a detailed review of the global/local non-intrusive coupling algorithm. Such method allows to alter a global finite element model, without actually modifying its corresponding numerical operator. We
also look into improvements of the initial algorithm (Quasi-
Newton and dynamic relaxation), and provide comparisons
based on several relevant test cases. Innovative examples
and advanced applications of the non-intrusive coupling
algorithm are provided, granting a handy framework for
both researchers and engineers willing to make use of such
process. Finally, a novel nonlinear domain decomposition
method is derived from the global/local non-intrusive cou-
pling strategy, without the need to use a parallel code or software. Such method being intended to large scale analysis, we show its scalability. Jointly, an efficient high level Message Passing Interface coupling framework is also proposed, granting an universal and flexible way for easy software coupling. A sample code is also given
